#位置参数
def happy_birth_day(name,age):
    print('祝'+name+'生日快乐！')
    print(str(age)+'岁生日快乐！')

#调用
# happy_birth_day('小明') #TypeError: happy_birth_day() missing 1 required positional argument: 'age'
#happy_birth_day(18,'小明') #can only concatenate str (not "int") to str
happy_birth_day('小明',18)


